Acta mathematica scientia,Series B ›› 2023, Vol. 43 ›› Issue (5): 2215-2233.doi: 10.1007/s10473-023-0517-5

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ALMOST SURE GLOBAL WELL-POSEDNESS FOR THE FOURTH-ORDER NONLINEAR SCHRÖDINGER EQUATION WITH LARGE INITIAL DATA*

Mingjuan Chen1, Shuai Zhang2†   

  1. 1. Department of Mathematics, Jinan University, Guangzhou 510632, China;
    2. School of Mathematical Sciences, Peking University, Beijing 100871, China
  • Received:2021-09-28 Revised:2023-05-02 Online:2023-10-25 Published:2023-10-25
  • Contact: †Shuai Zhang, E-mail: 1301110021@pku.edu.cn
  • About author:Mingjuan Chen, E-mail: mjchen@jnu.edu.cn

Abstract: We consider the fourth-order nonlinear Schrödinger equation (4NLS) \begin{align*} ({\rm i}\partial_t+\varepsilon\Delta+\Delta^2)u=c_1u^m+c_2(\partial u)u^{m-1}+c_3(\partial u)^2u^{m-2}, \end{align*} and establish the conditional almost sure global well-posedness for random initial data in $H^s(\mathbb{R}^d)$ for $s\in (s_c-1/2, \ s_c]$, when $d\geq3$ and $m\geq5$, where $s_c:=d/2-2/(m-1)$ is the scaling critical regularity of 4NLS with the second order derivative nonlinearities. Our proof relies on the nonlinear estimates in a new $M$-norm and the stability theory in the probabilistic setting. Similar supercritical global well-posedness results also hold for $d=2, \ m\geq4$ and $ d\geq3, \ 3\leq m<5$.

Key words: fourth-order Schrödinger equation, random initial data, almost sure global well-posedness, $M$-norm, stability theory

CLC Number: 

  • 35Q55
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